# CVE-2023-4878: Server-Side Request Forgery (SSRF) in instantsoft/icms2

> An attacker can exploit a Server-Side Request Forgery vulnerability in InstantCMS to access internal resources or bypass security controls.

- **Severity:** Medium 4.3 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Sep 2023
- **Updated:** 26 Sep 2024
- **Also known as:** GHSA-w3hc-fc6c-v6hj

## What is CVE-2023-4878?

CVE-2023-4878 is a medium-severity server-side request forgery vulnerability in instantsoft/icms2, published on 10 Sep 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Server-Side Request Forgery (SSRF) in GitHub repository instantsoft/icms2 prior to 2.16.1-git.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2023-4878?

It affects 1 product.


Products: Instantcms Instantcms.

## How do I fix CVE-2023-4878?

No fix has been published for CVE-2023-4878 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-4878 being exploited?

There is no known exploitation of CVE-2023-4878 in the wild and no public exploit code.

## Other vulnerabilities in instantsoft/icms2

- [CVE-2023-4188](https://insights.sbomify.com/CVE-2023-4188/): SQL Injection in instantsoft/icms2 (critical 9.8)
- [CVE-2013-10051](https://insights.sbomify.com/CVE-2013-10051/): InstantCMS <= 1.6 Remote PHP Code Execution (critical 9.3)
- [CVE-2023-4704](https://insights.sbomify.com/CVE-2023-4704/): External Control of System or Configuration Setting in instantsoft/icms2 (high 8.8)
- [CVE-2026-28281](https://insights.sbomify.com/CVE-2026-28281/): InstantCMS has Multiple CSRF Vulnerabilities (high 7.1)
- [CVE-2023-4652](https://insights.sbomify.com/CVE-2023-4652/): Cross-site Scripting (XSS) - Stored in instantsoft/icms2 (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-4878 and fix it if it is affected.

What it is: CVE-2023-4878 is a medium-severity server-side request forgery vulnerability in instantsoft/icms2, published on 10 Sep 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-4878 in the wild and no public exploit code.

Affected product: instantsoft/icms2. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2023-4878/ (Markdown: https://insights.sbomify.com/CVE-2023-4878/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-4878
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-4878
- OSV: https://osv.dev/vulnerability/CVE-2023-4878

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-4878/
Summaries are generated and may contain mistakes; the official description above is the record.